[llvm-commits] [llvm] r113113 - /llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp

[Chris Lattner]

Author: lattner
Date: Sun Sep  5 15:03:09 2010
New Revision: 113113

URL: http://llvm.org/viewvc/llvm-project?rev=113113&view=rev
Log:
eliminate some non-obvious casts.  UndefValue isa Constant.

Modified:
    llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp?rev=113113&r1=113112&r2=113113&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp Sun Sep  5 15:03:09 2010
@@ -443,8 +443,8 @@
     
       // Try to use constant folding to simplify the binary operator.
       for (unsigned i = 0, e = LHSVals.size(); i != e; ++i) {
-        Constant *V = LHSVals[i].first ? LHSVals[i].first :
-                                 cast<Constant>(UndefValue::get(BO->getType()));
+        Constant *V = LHSVals[i].first;
+        if (V == 0) V = UndefValue::get(BO->getType());
         Constant *Folded = ConstantExpr::get(BO->getOpcode(), V, CI);
         
         PushConstantIntOrUndef(Result, Folded, LHSVals[i].second);
@@ -518,8 +518,8 @@
         ComputeValueKnownInPredecessors(I->getOperand(0), BB, LHSVals);
         
         for (unsigned i = 0, e = LHSVals.size(); i != e; ++i) {
-          Constant *V = LHSVals[i].first ? LHSVals[i].first :
-                           cast<Constant>(UndefValue::get(CmpConst->getType()));
+          Constant *V = LHSVals[i].first;
+          if (V == 0) V = UndefValue::get(CmpConst->getType());
           Constant *Folded = ConstantExpr::getCompare(Cmp->getPredicate(),
                                                       V, CmpConst);
           PushConstantIntOrUndef(Result, Folded, LHSVals[i].second);